Machine foe foeming s-taeles



(No Model.)

W.A. ROOT.

MACHINE POR POBMING STAPLES.

Patented May 15, 18.83.

E -E-lilalll ilNiTn STATn aTnniT Trice.

MACHINE FOR FORIVHNG STAPLES.

SPECIFICATION forming part of Letters Patent No. 277,615, dated May 15,'1883. Application tiled August 17,1882. (No modelli To all whom it muyconcern Be itknown that I, WILLIAM ALBERT Roorr, of the city ot"Montreal, in the district ot' Montreal and Province of Quebec, Canada,have invented certain new and useful Improvements in Machines forForming Staples; and I do hereby declare that the following is afull,clear, and exact description of the same.

My invention, which is applicable to the manufacture of wire staples forfences and all ordinary purposes, has for its object to produce thesemore quickly and vperfectly than can be done by the machines now in use..It comprises the following features, viz: mechanism by which two blanksare cut at the same time from the wire fed intermittently to thecutters, devices for carrying and holding the wire during the operationof cutting, and the arrangement of plungers operating in the samedirection, by which the two cut blanks aresiinult-aneously bent intoshape with the bevels outside.

For full comprehension of my invention reference must be had totheannexed drawings, forming part ot' this specification, in which- Figurelis a plan view of the invention; Fig. 2, a sectional elevation on linemx, Fig. l; Fig..3, the same on line z z, Fig. l; Fig. 4, a detailsectional elevation of cutters, &c. Fig. 5, a sectional view takenthrough plunger M; Fig. 6, a plan view, enlarged, of plungers, 85e.; andFig. 7, a view of finished staple.

Similar letters ot' reference indicate like parts.

A is the bed or table of the machine, of any suitable size and shape,and carried as may be desired. Upon this is mounted, in suitablebearings, the main or operating shaft B, receiving motion through a beltand pulley, B', or in any other suitable way.

C is a counter-shaft rotated by means of bevel-gears b c and carried inbearings secured on A, upon it being mounted'a wheel ordisk,D, havingany desired proportion of its periphery covered with leather, rubber,&c., as shown at d. This, as the wheelD rotates, comes in conthe grooveF, table A, and the length of tact with the wire E, lying in formed inthe projection ot the feeds it forward to the cutters,

the intermittent feed, and consequently of the blanks to be cut from thewire, being regulated by the length of the leather d. A small roller,D', grooved or not, as desired,cover which the wire passes, facilitatesthe feed.

G is a lever pivoted in proper bearings and operated preferably by acani, G', mounted on theshal't B. To the end of this lever is secured,by a slottedlink, G2, the .cutter-head H, moving up and down in guidesH. A spring, g, or other suitable device may be used to restore thelever to its normal position whenthe pressure'ot' the cam is removed.

K K are the cutters. secured firmly, but so as to be capable ofadjustment, in die head ll, K K being the lower cutters. operating withthe cutters K K to shear the blanks from the wire, the cut being at anacute angle with its axis. It will be seen by reference 'to Fig. 4 thatthese cutters do not simply detach the end of the wire fed in, but outout an intermediate piece, thus makinghy the one cut two blanks, (markedrespectively E and E2.) The wire which forms the blank E is, when thecut is to be made, resting on a hed, L, carried in a suitable hanger andsupported by spiral springs l, coiled around pins L L', so as to opposea yielding resistance to the action ofthe cutters and allow them toshear completely through. The blank E2 is, when detached, held in placeby a plunger, M, suitably secured in the head H, and arranged, as shownin Fig. 4, with a spring, so as to at't'ord sufficient pressure to holdthe blank in place, but not to resist the action of the forminghorizontal plungers now to be described, and shown particularly in Figs.1 and G.

Immediately in front of the cutters K, and secured in a recess, n,formed in the bed A, are arranged projecting pieces or fingers N N N2.

O is a plunger-head, to which back-and-forth motion is given by means ofa pitman, P, actuated by a crank on the main shaft B, or in any othersuitable way.

Q Q Q2 areplungers secured to the head. O, Q being so placed as to enterthe space between N and N, and Q Q2 as to pass on either side of N2,space being in every case allowed for the thickness of the wire. Whenthe plunger-V head, which is timed to operate directly the IDO i site tothe space between N and N. The result is that the plungers Q, and Q', intheir forward movement, passing on either side of the projection N2,bend the blank E' into the form of a staple with the points pointingforward and the beveled edges outside. Simultaneously with this theplunger Q, entering the space between N and N', has taken with it theblank E2, bending it across its own end into a staple pointing backwardand with the bevels on the outside.

Although the finished staples will, as a rule, y out of their sockets, Ipropose to attach to the machine any ordinary device-such as a springtoeject them in case of difficulty. Should vit be desired that the bevels,although on the outside of the staple, should not beopposite to eachother, the device shown in Figs. 4 and 5 and now to be described may beemployed for this purpose.

Upon the under side of the cutter-head H is formed a lug, h, which, asthe cutters K come to the full end of their stroke, engages with asimilar lug, m, on the side of the plunger M, (these lugs having obliquemeeting faces,) 3o pushing it a little over in its seat in the head H,and thereby slightly turning over the blank E2, so that the bevels arenot vertical, and, when the blank is bent by the plunger Q, will be,although on the outside of the staple, not opposite to each other. v(SeeFig. 7.)

1n will ot' course he understood that the plunger Q works in connectionwith the projectingngers N N at a higher level than that at which theplungers Q (U2 work in connection with the tin ger N2. These severalprojecting fingers and plungers are so secured to the bed-plate andplunger-head as to be capable of adjustment to compensate for wear.

Although special mechanism which will be found very suitable for thepurpose has been described as operating the cutters and plungers, itmust be understood that I do not con tine myself to this, as anywell-known equivalent may be employed for the purpose.

Having thus described my invention, I beg to state that what I claim asnew, and 4wish secured by Letters Patent, is as follows:

1. In a wirestaple forming machine, the combination of two cutters forseparating from the wire more than one blank at a time, and areciprocating plunger for simultaneously bending said blanks into shape,substantially as set forth. v

2. In a wire staple -forming machine, the combination, with thecutter-head, ot' two cutters, whereby both ends of one blank are cut atonce and two blanks detached at the same time.

3. In a wire-staple-tbrniing machine, the cutters arranged to cut theblanks with their oblique ends in opposite directions. v

4. In a wire-staple-forming machine, a set of projecting fingers formedin the bed-plate, and a corresponding set ot' plungers secured in amoving plunger-head, so arranged that one plunger shallt in between twofingers, and vice versa, as and for the purposes set forth.

5. In combination with the moving and ixed cutters K K', the bed-plateIl, constructed, as shown, and arranged to support the Yintermediate cutblank.

G. In combination with the cutter -head H and 'cutters K, the plunger M,carried in the cutter-head and holding detached blank E2.

f '7. The combination, with the head Hand plunger M, of the lugs- It andm, as and for the purposes set forth.

Montreal, 3d day of August, A. D. 1882.

WILLIAM ALBERT Roo'r.

Witnesses:

OWEN N. Evans, T. P. I. MATHEWs.

